1570s, "behavior of a courtier," from court (n.) + -ship. Meaning "the wooing of a woman, attention paid by a man to a woman with intention of winning her affection and ultimately her consent to marriage" is from 1590s. By 1830s it was used of a period during which a couple mutually develops a romantic relationship with a view to marriage.
its was a brief and intense courtship
courtier
courtly
court-marshal
court-martial
courtroom
courtship
courtyard
couscous
cousin
couth
couture